A company has a team of HP VAN SDN Controllers. On several Comware switches, the network
administrator configures two controller IP addresses in the OpenFlow instance. The SDN application
requires that the switches perform the fastest failover from one controller to another.
Which switch OpenFlow instance setting meets this requirement?

A.
failover mode set to secure

B.
controller role set to equal for both controllers

C.
second controller set to control auxiliary channel

D.
connection mode set to multiple